开发人员要是购买了版本10的License，可以免费更新到10.5，旗舰版新的License和个人License升级现在则更加便宜。

Version 10.5 is a free update for developers with a version 10 license, and the Ultimate version is now offered at a lower price for new licenses and for personal license upgrades.

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Intellij IDEA9是第一款包含免费开源社区版和旗舰版两个版本的非beta版本，这在几个月前InfoQ网站上报道过。

IntelliJ IDEA 9 is the first non-beta release which includes the free and open-source Community edition and the Ultimate edition, first reported by InfoQ a couple months ago.

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即便如此，你不能升级至较低版本——即是说，不能从Vista旗舰版升级至Windows7家庭高级版。

Even then, you cannot upgrade to a lesser version-say, from Vista Ultimate to a Windows 7 Home Premium.

youdao

即便如此，你不能升级至较低版本——即是说，不能从Vista旗舰版升级至Windows7家庭高级版。

Even then, you cannot upgrade to a lesser version-say, from Vista Ultimate to a Windows 7 Home Premium.

youdao